classdef多项式2属性poly=0;endproperty方法函数p=多项式2(a)如果(nargin==1)如果(isa(a,“多项式2”))p.poly=a.poly;elseif(isreal(a)&&isvector(a))p.poly=a(:).';#强制行向量else错误(“多项式2:A必须是实向量”);endif-endif-endfunction函数disp(p)a=p.poly;first=true;对于i=1:长度(a);如果(a(i)！=0)如果(first)first=false;elseif(a(i)>0||是一个(a(i))printf(“+”);endif if(a(i)＜0)printf(“-”);endif if(i==1)printf(“%.5g”,abs(a(i)));elseif(abs(a(i))！=1) printf(“%.5g*”,abs(a(i)));endif if(i>1)printf(“X”);endif if(i>2)printf(“^%d”,i-1);endif endif endfor if(first)printf(“0”);endif printf(“\n”);endfunction endmethodsendclassdef